/Engine/Plugins/EnhancedInput/Source/EnhancedInput/Public/UserSettings/EnhancedInputUserSettings.h
Returns the number of player mapped keys to the given Default Mapping
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Enhanced Input|User Settings", Meta=(ReturnDisplayName="Number of mappings")) virtual int32 QueryPlayerMappedKeys ( const [FPlayerMappableKeyQueryOptions](API\Plugins\EnhancedInput\UserSettings\FPlayerMappableKeyQueryOptions) & Options, [TArray](API\Runtime\Core\Containers\TArray)< [FKey](API\Runtime\InputCore\FKey) > & OutKeys ) const